Heeling-machine.



T. LUND.

HEELING MACHINE.

APPLICATION FILED MAY 10, 1910.

Patented May 11, 1915.

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' r n" s'rA s PATENT oFrioE.

. THOMAS LUND, or BEvERIq, MASSACHUSETTS, ASSIGNOR 'ro UNITED. SHOE MACHINERY COMPANY, or PATEBSON, NEWJERSEY, A CORPORATION or NEW JERSEY.

To all whom it may concern." Y v j Be it known that I, THOMAS LUND, a citizen of the United States, residing at Beverly, in the. county of Essex and State of Massachusetts, have invented certain Imtratedin the drawings is similar in its general arrangement to\the band clamp shown provements in Heeling-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

The present invention relates to an improvement in band clamps adapted to en: gage the counter of a shoe while the heel is being operated upon.

Automatic machines for p erforming operations upon the heel of a shoe after the outsole hasbeen applied such, for instance, as nailing, trimming or breasting, are generally provided with a clamp to engage the counter-of the shoe and properly position the shoe relative to the operating tools while the operation is being performed.

\ Such a clamp is generally of flexible material formed as a U-shaped band to encircle the quarter part of the shoe and arranged to closely engage the upper just above the outsole. It is important that the band clamp be constructed so as to hold the shoe firmly and rigidly in working position but binations and arrangements of parts, here inafter described and claimed, which possess advantages in; construction which will be apparent to those skilled in the art.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which Figure l is a perspective/of the band clamp, as a whole, detached from the machine in which it is to be used; Fig. 2 is a side elevation of thedet'ached band clamp HEELING-MACHINE. 7

Specification of Letters Patent. Patented May 11, 1915. Application filed May 10, 1910. Serial No.- 560,440. l U

Fig. "3 is a detail, in section, through 'the' in United States Letters Patent to C.

Glidden fora heel nailing machine, No. 500,486, dated June 27, [11893. -In the present invention, as in the band clampshown in that patent, there is provided a-slide arranged for vertical movement on the machine, at the lower end of whichis carried a band clamp support, within which the flexible U-shaped band is located, and to which it is connected by means of side links pivoted'to the support-and to ears on the band.

In the present invention a much stronger and simpler flexible band2 is provided in that when it is stamped out it is provided with integral ears 3 at its upper edge which may be bent back at an angle to the body of the band to form the lugs to which the inner ends of the. links are pivoted. It has been found that in the earlier form of band clamp, wherein the side links are connected to lugs. riveted on the band, the strain upon the rivets is such that they are frequently broken. This earlier form of connection between the band and links is, therefore, un-

serviceable. With the present construction of integral lugs onthe band this disadvantage has been entirely overcome,

In the band clamp illustrated in the patent hereinbefore referred to, no provision is made for adjusting the width of the clamp to accommodate varyingwidths of shoes to be operated upon in the machine. In the present invention such an adjustment is'provided for by forming the support for the clamp in two parts 5 and 6, mounting themfor transverse sliding movement in a T-shaped slot 7 in the front face of a car- H rier 8, and threading throughthe rear portions of said supports a' right and left screw 9 which is held from axial movement by providing it with collars 10 at the outer and inner side of a lug, or flange, 12 at one.

.end of the carrier. The links 4 are pivoted at their inner ends to the lugs 3 by means of removable pins and at their outer ends to the forward ends of the supports 5 and .6 by similar removable pins all of which pins may be held in place by split pins or equivalent retaining means. The lug 3 at the rear end -of the band clamp has removably pinned thereto a block 13 which carries a rearwardly extending guide rod, or finger,

14: (Fig. 3) passing through an aperture in the carrier 8 formed for its reception. This block and finger is similar to that shown in the patent to Glidden hereinbefore referred to. \Vith this construction the band clamp 2 may be opened or closed, for varying widths of shoes, by turning the threaded rod 9 in one direction or another. The right :and left threads will cause the two parts 5 and 6 of the band clamp carrier to be separated or drawn together equally and simultaneously.

As Will readily be understood, the mounting of the band is such that with the band forward-(see dotted lines in Fig. 4) as the supports 5 and 6 are drawn together in order to accommodate the band clamp to the narrower shoes, the supporting links 4 to those skilled in the art, in positioning a shoe ina machine for any operation upon the heel, the shoe must be placed in a definite. and predetermined position relative to the operating tools. In varying sizes of shoes the size or-location of the tools will" vary and, therefore, the working position of the shoe will have to be altered more or less.

The device of the present invention is, therefore, provided with anad uStabIe stop for the block 13 to seat itself against when the band 2 is moved backward wlth n its supports during the positioning of a shoe'in the machine. This stop may conveniently comprise a sleeve 15'threaded into the band clamp carrier and through which the rod 14' projects, the sleeve .carrylng at its forward end a nut 16 by which 1t may be ad usted and which forms a stop against which the block 13 may abut. By adjusting the sleeve l5 toward and from the carrier 8, the rearward, or operative, position of the band clamp, to accord with the sizeof the shoe being operated upon, is determmed.

It is desirable that the shoe be held firmly against movement while being operated clamped when in operative position.

upon and to gain this end the counter of the shoe should be clasped tightly by the band.

Referring now more particularly to Fig. 4c, 1

. when in its dotted line, or forward, position.

This is due to the use of rigid links, having no provision for loose play, for connecting the band to its support. WVhen a shoe is removed from the machine, the band is pulled out and is left in the dotted line position, Fig. 4. Thereafter, when adjusted by means of the screw 9 the opening is left somewhat greater than the width of the shoe to be operated upon. As the band is moved backward between the arms of its I support," however, the angular movement of the rigid links, which being mounted for pivotal movement only, acts to force the arms of the band inward against the shoe counter causing the shoe to be tigl i tly he position of the stop nut 16 is such that the backward, or inward movement of the band carries the links a little "past dead center (see Fig. 4). This permits a slight expansion of the band during the latter portion of its inward movement which operates to hold the band firmly seated within its supportsv with the shoe in operative position. The band, while in this position, cannot move forward without some force being applied to bring the links past dead center again.

To hold the shoe to the best advantage,

it should be claspedby a pressure .on the band throughout its depth. In the construction of the prior patent hereinbefore referred to, any pressure exerted against the sides of the clamp is transmitted through the small lugs by which the links are connected to the band clamp. The pressure is, therefore, transmitted through the upper marginal portion of the clamp only and its.

lower marginal portion, owing to the fact that it. is made of spring material, frequently does not engagethe counter of the shoe at all being held somewhat away from the counter. To overcome this difliculty and provide a band clamp'of flexible mate rial which will engage the counter of the shoe firmly throughout its entire depth, the inner ends of the'links 4 and the block 13 are each provided with 2. depending portion 17 forming pressure blocks. These blocks have such a bearing against the clamp that the pressure is transmitted to the shoe throughout the depth of the clamp. Such a construction provides for an even pressure upon the clamp both at its top and bottom and serves successfully to conform the clamp to the counter of the shoe and hold the shoe firmly in the machine.

The heels of many shoes are provided with 25 .This is'disadvantageous for, as hereinbefore a wedge lift which in the finished shoe causes the plane of the heel seat of the shoe to extend at a slight angle to the plane of the .tread face of the heel. Vhen this type of heel is being attached, or otherwise operated" upon in a heeling machine, the .shoe should be held with the plane of its heel seat at the angle relative to the heel which it will assume in a completed shoe.. Toenableathe shoe conveniently to be so held, heretofore the band clamp has been mounted upon its support so that it can be tilted in a fore and aftdirection andthus cause the'clamp to be directed downwardly at the angle at which the shoe should be held. Such an arrangement is illustrated in the prior patent referred to but in that patent the pivotal I point is located substantially midway between the front and rear ends of the clamp.

With 'su'cha construction, as will be readily understood, when the clamp is tilted the relative position of the rear end of the clamp and the operating tools is difl'ere'nt from the relative position of these parts when the clamp is in its normal or horizontal position.

stated, it is highly desirable that when the shoe is moved backward into the machineit 'beto a definite point relative to the operat- ,30'

. complish this result, the carrier 8 1s 'provided with two rearwardly extending ears 18, each of whichis grooved at its inner side and curved to conform to a'cu'rved guide 19, extending from the lower end of the vertical sliding'support 20 uponvvhich the band trated in Fig. 2.

clamp as a whole is sustained. The curve of the guide 191s determined by arcs of circles struck from the point 0 as a center. The carrier 8' maybeheld in any position of adjustment on the guide 1 9 by means of a set screw 21. Withthe construction just described, by loosening the set screw 21 the band clamp carrier 8 may be tilted about itself to any desired angle from the hori zontal "and-relocked in such position and such a tilting movement will not vary the position of therear of the clamp relative to i the working tools. This is clearly illus- From the description heretofore given of the improved bandclamp, it will be seen that'it possesses distinct advantages over band clamps of the prior art in that itno't Only may be, adjusted for width but that an equal adjustment at each side of the band is obtained by means of a s ngle adjusting device. Further advantages consist in the adjustments permitting shoes of varying sizes and" styles to be properly positioned inthe machine for the operation of the tools and permitting an independent adjustment for .the proper positioning in the machine of shoes. provided with wedge heels. The device is still further advantageous in that it not only provides for a clamping pressure upon'the counter of the shoe, enabling the shoe to unfailingly be securely and rigidly held in operative position, but further in providing for a transmission of the pressure throughout the depth of the band.

The nature and scope of the present invention having been indicated and the preferred embodiment of the invention having been specifically described, what is claimed as new, is I r Y 1. In a device "of the class described, positioning means for a shoe including a flexible clamping band, oppositely disposed supporting members adjustable in a straight line toward and from each other, and pivoted links interposed between the band and the members.

2.- In a device of the class described, the combination of a U-shaped band supported 1 at three separate'points by pressure blocks extendingsubstantially the entire width of "the band and adjusting mechanism constructed andarranged for adjustingtwo of the pressure blocks simultaneously toward or from each other in a right line.

3. A. band clamp for heel machines, having, in combination, a flexible U-shaped band, a support thereforarrangedoutside v the band, and links connecting tliesupport and band, said links havingheads rigid therewith at theirinner ends extending sub-, stantially fromone edge to the other of the band. I

4. In a band clamp for heel machines, a flexible band having at one edge integral ears bent at an angle to the body of the 'band, a band support, and links pivotally connected tosaid ears and to said support,

the ends of said links which are connected .to said ears being provided with pressure blocks extending substantially the entire width of the band.

5. In a band clamp forheel machines, the

, combination of a band support, a band sustained thereby, and asegmental guide for said support, said guide having its center of curvature at the rear end of the band.

v 6. In a band clamp for heel machines, the CO II 1b1I1atlOILOIE a band support, a band sustamed thereby, and a segmental guide arranged to permit angular movement of said support in a vertical plane about a center a the rear end of the band.

7 A band clamp for heel machines, having, in combination, a band support having a flexible U-shaped band sustained thereby, In testimony whereof I have signed my a single means for adjusting the armsof name to this specification in'the presence of the vband toward and from each other for two subscribing Witnesses.

varying widths of shoe, and means permit- THOMAS LUND. 5 ting said band and its adjusting means to' Witnesses: v be tilted about a horizontal axis passing CHARLES E. GRUsH,

through a point 0 at the rear end of the band. NORMAN C. HUSSEY. 

